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<div class="section">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="interprocess.acknowledgements_notes"></a><a class="link" href="acknowledgements_notes.html" title="Acknowledgements, notes and links">Acknowledgements,
    notes and links</a>
</h2></div></div></div>
<div class="toc"><dl>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes">Notes</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.thanks_to">Thanks
      to...</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes">Release
      Notes</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.books_and_links">Books
      and interesting links</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements">Future
      improvements...</a></span></dt>
</dl></div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="interprocess.acknowledgements_notes.notes"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes" title="Notes">Notes</a>
</h3></div></div></div>
<div class="toc"><dl>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes.notes_windows">Notes
        for Windows users</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes.notes_linux">Notes
        for Linux users</a></span></dt>
</dl></div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.notes.notes_windows"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes.notes_windows" title="Notes for Windows users">Notes
        for Windows users</a>
</h4></div></div></div>
<div class="toc"><dl>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes.notes_windows.notes_windows_com_init">COM
          Initialization</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes.notes_windows.notes_windows_shm_folder">Shared
          memory emulation folder</a></span></dt>
</dl></div>
<div class="section">
<div class="titlepage"><div><div><h5 class="title">
<a name="interprocess.acknowledgements_notes.notes.notes_windows.notes_windows_com_init"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes.notes_windows.notes_windows_com_init" title="COM Initialization">COM
          Initialization</a>
</h5></div></div></div>
<p>
            <span class="bold"><strong>Boost.Interprocess</strong></span> uses the Windows
            COM library to implement some features and initializes it with concurrency
            model <code class="computeroutput"><span class="identifier">COINIT_APARTMENTTHREADED</span></code>.
            If the COM library was already initialized by the calling thread for
            another concurrency model, <span class="bold"><strong>Boost.Interprocess</strong></span>
            handles this gracefully and uses COM calls for the already initialized
            model. If for some reason, you want <span class="bold"><strong>Boost.Interprocess</strong></span>
            to initialize the COM library with another model, define the macro <code class="computeroutput"><span class="identifier">BOOST_INTERPROCESS_WINDOWS_COINIT_MODEL</span></code>
            before including <span class="bold"><strong>Boost.Interprocess</strong></span>
            to one of these values:
          </p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
                <code class="computeroutput"><span class="identifier">COINIT_APARTMENTTHREADED_BIPC</span></code>
              </li>
<li class="listitem">
                <code class="computeroutput"><span class="identifier">COINIT_MULTITHREADED_BIPC</span></code>
              </li>
<li class="listitem">
                <code class="computeroutput"><span class="identifier">COINIT_DISABLE_OLE1DDE_BIPC</span></code>
              </li>
<li class="listitem">
                <code class="computeroutput"><span class="identifier">COINIT_SPEED_OVER_MEMORY_BIPC</span></code>
              </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h5 class="title">
<a name="interprocess.acknowledgements_notes.notes.notes_windows.notes_windows_shm_folder"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes.notes_windows.notes_windows_shm_folder" title="Shared memory emulation folder">Shared
          memory emulation folder</a>
</h5></div></div></div>
<p>
            Shared memory (<code class="computeroutput"><span class="identifier">shared_memory_object</span></code>)
            is implemented in windows using memory mapped files, placed in a directory
            in the shared documents folder (<code class="computeroutput"><span class="identifier">SOFTWARE</span><span class="special">\</span><span class="identifier">Microsoft</span><span class="special">\</span><span class="identifier">Windows</span><span class="special">\</span><span class="identifier">CurrentVersion</span><span class="special">\</span><span class="identifier">Explorer</span><span class="special">\</span><span class="identifier">Shell</span> <span class="identifier">Folders</span><span class="special">\</span><span class="identifier">Common</span> <span class="identifier">AppData</span></code>).
            This directory name is the last bootup time (obtained via COM calls),
            so that each bootup shared memory is created in a new folder obtaining
            kernel persistence shared memory.
          </p>
<p>
            Unfortunately, due to COM implementation related errors, in Boost 1.48
            &amp; Boost 1.49 the bootup-time folder was dumped and files were directly
            created in shared documents folder, reverting to filesystem persistence
            shared memory. Boost 1.50 fixed those issues and recovered bootup time
            directory and kernel persistence. If you need to reproduce Boost 1.48
            &amp; Boost 1.49 behaviour to communicate with applications compiled
            with that version, comment <code class="computeroutput"><span class="preprocessor">#define</span>
            <span class="identifier">BOOST_INTERPROCESS_HAS_KERNEL_BOOTTIME</span></code>
            directive in the Windows configuration part of <code class="computeroutput"><span class="identifier">boost</span><span class="special">/</span><span class="identifier">interprocess</span><span class="special">/</span><span class="identifier">detail</span><span class="special">/</span><span class="identifier">workaround</span><span class="special">.</span><span class="identifier">hpp</span></code>.
          </p>
</div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.notes.notes_linux"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes.notes_linux" title="Notes for Linux users">Notes
        for Linux users</a>
</h4></div></div></div>
<div class="toc"><dl><dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes.notes_linux.notes_linux_overcommit">Overcommit</a></span></dt></dl></div>
<div class="section">
<div class="titlepage"><div><div><h5 class="title">
<a name="interprocess.acknowledgements_notes.notes.notes_linux.notes_linux_overcommit"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes.notes_linux.notes_linux_overcommit" title="Overcommit">Overcommit</a>
</h5></div></div></div>
<p>
            The committed address space is the total amount of virtual memory (swap
            or physical memory/RAM) that the kernel might have to supply if all applications
            decide to access all of the memory they've requested from the kernel.
            By default, Linux allows processes to commit more virtual memory than
            available in the system. If that memory is not accessed, no physical
            memory + swap is actually used.
          </p>
<p>
            The reason for this behaviour is that Linux tries to optimize memory
            usage on forked processes; fork() creates a full copy of the process
            space, but with overcommitted memory, in this new forked instance only
            pages which have been written to actually need to be allocated by the
            kernel. If applications access more memory than available, then the kernel
            must free memory in the hard way: the OOM (Out Of Memory)-killer picks
            some processes to kill in order to recover memory.
          </p>
<p>
            <span class="bold"><strong>Boost.Interprocess</strong></span> has no way to change
            this behaviour and users might suffer the OOM-killer when accessing shared
            memory. According to the <a href="http://www.kernel.org/doc/Documentation/vm/overcommit-accounting" target="_top">Kernel
            documentation</a>, the Linux kernel supports several overcommit modes.
            If you need non-kill guarantees in your application, you should change
            this overcommit behaviour.
          </p>
</div>
</div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="interprocess.acknowledgements_notes.thanks_to"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.thanks_to" title="Thanks to...">Thanks
      to...</a>
</h3></div></div></div>
<div class="toc"><dl><dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.thanks_to.thanks_to_people">People</a></span></dt></dl></div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.thanks_to.thanks_to_people"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.thanks_to.thanks_to_people" title="People">People</a>
</h4></div></div></div>
<p>
          Many people have contributed with ideas and revisions, so this is the place
          to thank them:
        </p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              Thanks to all people who have shown interest in the library and have
              downloaded and tested the snapshots.
            </li>
<li class="listitem">
              Thanks to <span class="bold"><strong>Francis Andre</strong></span> and <span class="bold"><strong>Anders Hybertz</strong></span> for their ideas and suggestions.
              Many of them are not implemented yet but I hope to include them when
              library gets some stability.
            </li>
<li class="listitem">
              Thanks to <span class="bold"><strong>Matt Doyle</strong></span>, <span class="bold"><strong>Steve
              LoBasso</strong></span>, <span class="bold"><strong>Glenn Schrader</strong></span>,
              <span class="bold"><strong>Hiang Swee Chiang</strong></span>, <span class="bold"><strong>Phil
              Endecott</strong></span>, <span class="bold"><strong>Rene Rivera</strong></span>,
              <span class="bold"><strong>Harold Pirtle</strong></span>, <span class="bold"><strong>Paul
              Ryan</strong></span>, <span class="bold"><strong>Shumin Wu</strong></span>, <span class="bold"><strong>Michal Wozniak</strong></span>, <span class="bold"><strong>Peter
              Johnson</strong></span>, <span class="bold"><strong>Alex Ott</strong></span>, <span class="bold"><strong>Shane Guillory</strong></span>, <span class="bold"><strong>Steven
              Wooding</strong></span> and <span class="bold"><strong>Kim Barrett</strong></span>
              for their bug fixes and library testing.
            </li>
<li class="listitem">
              Thanks to <span class="bold"><strong>Martin Adrian</strong></span> who suggested
              the use of Interprocess framework for user defined buffers.
            </li>
<li class="listitem">
              Thanks to <span class="bold"><strong>Synge Todo</strong></span> for his boostbook-doxygen
              patch to improve Interprocess documentation.
            </li>
<li class="listitem">
              Thanks to <span class="bold"><strong>Olaf Krzikalla</strong></span> for his Intrusive
              library. I have taken some ideas to improve red black tree implementation
              from his library.
            </li>
<li class="listitem">
              Thanks to <span class="bold"><strong>Daniel James</strong></span> for his unordered_map/set
              family and his help with allocators. His great unordered implementation
              has been a reference to design exception safe containers.
            </li>
<li class="listitem">
              Thanks to <span class="bold"><strong>Howard Hinnant</strong></span> for his amazing
              help, specially explaining allocator swapping, move semantics and for
              developing upgradable mutex and lock transfer features.
            </li>
<li class="listitem">
              Thanks to <span class="bold"><strong>Pavel Vozenilek</strong></span> for his
              continuous review process, suggestions, code and help. He is the major
              supporter of Interprocess library. The library has grown with his many
              and great advices.
            </li>
<li class="listitem">
              And finally, thank you to all Boosters. <span class="bold"><strong>Long
              live to C++!</strong></span>
            </li>
</ul></div>
</div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="interprocess.acknowledgements_notes.release_notes"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes" title="Release Notes">Release
      Notes</a>
</h3></div></div></div>
<div class="toc"><dl>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_53_00">Boost
        1.53 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_52_00">Boost
        1.52 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_51_00">Boost
        1.51 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_50_00">Boost
        1.50 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_49_00">Boost
        1.49 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_48_00">Boost
        1.48 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_46_00">Boost
        1.46 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_45_00">Boost
        1.45 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_41_00">Boost
        1.41 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_40_00">Boost
        1.40 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_39_00">Boost
        1.39 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_38_00">Boost
        1.38 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_37_00">Boost
        1.37 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_36_00">Boost
        1.36 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_35_00">Boost
        1.35 Release</a></span></dt>
</dl></div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_53_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_53_00" title="Boost 1.53 Release">Boost
        1.53 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              Fixed GCC -Wshadow warnings.
            </li>
<li class="listitem">
              Experimental multiple allocation interface improved and changed again.
              Still unstable.
            </li>
<li class="listitem">
              Replaced deprecated BOOST_NO_XXXX with newer BOOST_NO_CXX11_XXX macros.
            </li>
<li class="listitem">
              <span class="bold"><strong>ABI breaking</strong></span>: changed node pool allocators
              internals for improved efficiency.
            </li>
<li class="listitem">
              Fixed bug <a href="https://svn.boost.org/trac/boost/ticket/7795" target="_top">#7795</a>.
            </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_52_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_52_00" title="Boost 1.52 Release">Boost
        1.52 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              Added <code class="computeroutput"><span class="identifier">shrink_by</span></code> and
              <code class="computeroutput"><span class="identifier">advise</span></code> functions in
              <code class="computeroutput"><span class="identifier">mapped_region</span></code>.
            </li>
<li class="listitem">
              <span class="bold"><strong>ABI breaking:</strong></span> Reimplemented <code class="computeroutput"><span class="identifier">message_queue</span></code> with a circular buffer
              index (the old behavior used an ordered array, leading to excessive
              copies). This should greatly increase performance but breaks ABI. Old
              behaviour/ABI can be used undefining macro <code class="computeroutput"><span class="identifier">BOOST_INTERPROCESS_MSG_QUEUE_CIRCULAR_INDEX</span></code>
              in <code class="computeroutput"><span class="identifier">boost</span><span class="special">/</span><span class="identifier">interprocess</span><span class="special">/</span><span class="identifier">detail</span><span class="special">/</span><span class="identifier">workaround</span><span class="special">.</span><span class="identifier">hpp</span></code>
            </li>
<li class="listitem">
              Improved <code class="computeroutput"><span class="identifier">message_queue</span></code>
              insertion time avoiding priority search for common cases (both array
              and circular buffer configurations).
            </li>
<li class="listitem">
              Implemented <code class="computeroutput"><span class="identifier">interproces_sharable_mutex</span></code>
              and <code class="computeroutput"><span class="identifier">interproces_condition_any</span></code>.
            </li>
<li class="listitem">
              Improved <code class="computeroutput"><span class="identifier">offset_ptr</span></code>
              performance.
            </li>
<li class="listitem">
              Added integer overflow checks.
            </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_51_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_51_00" title="Boost 1.51 Release">Boost
        1.51 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              Synchronous and asynchronous flushing for <code class="computeroutput"><span class="identifier">mapped_region</span><span class="special">::</span><span class="identifier">flush</span></code>.
            </li>
<li class="listitem">
              <span class="bold"><strong>Source &amp; ABI breaking</strong></span>: Removed
              <code class="computeroutput"><span class="identifier">get_offset</span></code> method from
              <code class="computeroutput"><span class="identifier">mapped_region</span></code> as it
              has no practical utility and <code class="computeroutput"><span class="identifier">m_offset</span></code>
              member was not for anything else.
            </li>
<li class="listitem">
              <span class="bold"><strong>Source &amp; ABI breaking</strong></span>: Removed
              <code class="computeroutput"><span class="identifier">flush</span></code> from <code class="computeroutput"><span class="identifier">managed_shared_memory</span></code>. as it is unspecified
              according to POSIX: <a href="http://pubs.opengroup.org/onlinepubs/009695399/functions/msync.html" target="_top"><span class="emphasis"><em>"The
              effect of msync() on a shared memory object or a typed memory object
              is unspecified"</em></span> </a>.
            </li>
<li class="listitem">
              Fixed bug <a href="https://svn.boost.org/trac/boost/ticket/7152" target="_top">#7152</a>,
            </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_50_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_50_00" title="Boost 1.50 Release">Boost
        1.50 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              Fixed bugs <a href="https://svn.boost.org/trac/boost/ticket/3750" target="_top">#3750</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/6727" target="_top">#6727</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/6648" target="_top">#6648</a>,
            </li>
<li class="listitem">
              Shared memory in windows has again kernel persistence: kernel bootstamp
              and WMI has received some fixes and optimizations. This causes incompatibility
              with Boost 1.48 and 1.49 but the user can comment <code class="computeroutput"><span class="preprocessor">#define</span>
              <span class="identifier">BOOST_INTERPROCESS_HAS_KERNEL_BOOTTIME</span></code>
              in the windows configuration part to get Boost 1.48 &amp; Boost 1.49
              behaviour.
            </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_49_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_49_00" title="Boost 1.49 Release">Boost
        1.49 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              Fixed bugs <a href="https://svn.boost.org/trac/boost/ticket/6531" target="_top">#6531</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/6412" target="_top">#6412</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/6398" target="_top">#6398</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/6340" target="_top">#6340</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/6319" target="_top">#6319</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/6287" target="_top">#6287</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/6265" target="_top">#6265</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/6233" target="_top">#6233</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/6147" target="_top">#6147</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/6134" target="_top">#6134</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/6058" target="_top">#6058</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/6054" target="_top">#6054</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/5772" target="_top">#5772</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/5738" target="_top">#5738</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/5622" target="_top">#5622</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/5552" target="_top">#5552</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/5518" target="_top">#5518</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4655" target="_top">#4655</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4452" target="_top">#4452</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4383" target="_top">#4383</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4297" target="_top">#4297</a>.
            </li>
<li class="listitem">
              Fixed timed functions in mutex implementations to fulfill POSIX requirements:
              <span class="emphasis"><em>Under no circumstance shall the function fail with a timeout
              if the mutex can be locked immediately. The validity of the abs_timeout
              parameter need not be checked if the mutex can be locked immediately.</em></span>
            </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_48_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_48_00" title="Boost 1.48 Release">Boost
        1.48 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              Fixed bugs <a href="https://svn.boost.org/trac/boost/ticket/2796" target="_top">#2796</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4031" target="_top">#4031</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4251" target="_top">#4251</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4452" target="_top">#4452</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4895" target="_top">#4895</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/5077" target="_top">#5077</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/5120" target="_top">#5120</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/5123" target="_top">#5123</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/5230" target="_top">#5230</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/5197" target="_top">#5197</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/5287" target="_top">#5287</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/5294" target="_top">#5294</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/5306" target="_top">#5306</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/5308" target="_top">#5308</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/5392" target="_top">#5392</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/5409" target="_top">#5409</a>,
            </li>
<li class="listitem">
              Added support to customize offset_ptr and allow creating custom managed
              segments that might be shared between 32 and 64 bit processes.
            </li>
<li class="listitem">
              Shared memory in windows has again filesystem lifetime: kernel bootstamp
              and WMI use to get a reliable timestamp was causing a lot of trouble.
            </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_46_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_46_00" title="Boost 1.46 Release">Boost
        1.46 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
              Fixed bugs <a href="https://svn.boost.org/trac/boost/ticket/4979" target="_top">#4979</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4907" target="_top">#4907</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4895" target="_top">#4895</a>
            </li></ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_45_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_45_00" title="Boost 1.45 Release">Boost
        1.45 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              Fixed bugs <a href="https://svn.boost.org/trac/boost/ticket/1080" target="_top">#1080</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/3284" target="_top">#3284</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/3439" target="_top">#3439</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/3448" target="_top">#3448</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/3582" target="_top">#3582</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/3682" target="_top">#3682</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/3829" target="_top">#3829</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/3846" target="_top">#3846</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/3914" target="_top">#3914</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/3947" target="_top">#3947</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/3950" target="_top">#3950</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/3951" target="_top">#3951</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/3985" target="_top">#3985</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4010" target="_top">#4010</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4417" target="_top">#4417</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4019" target="_top">#4019</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4039" target="_top">#4039</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4218" target="_top">#4218</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4230" target="_top">#4230</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4250" target="_top">#4250</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4297" target="_top">#4297</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4350" target="_top">#4350</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4352" target="_top">#4352</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4426" target="_top">#4426</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4516" target="_top">#4516</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4524" target="_top">#4524</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4557" target="_top">#4557</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4606" target="_top">#4606</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4685" target="_top">#4685</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/4694" target="_top">#4694</a>.
            </li>
<li class="listitem">
              Added support for standard rvalue reference move semantics (tested
              on GCC 4.5 and VC10).
            </li>
<li class="listitem">
              Permissions can be detailed for interprocess named resources.
            </li>
<li class="listitem">
              <code class="computeroutput"><span class="identifier">mapped_region</span><span class="special">::</span><span class="identifier">flush</span></code> initiates disk flushing but
              does not guarantee it's completed when returns, since it is not portable.
            </li>
<li class="listitem">
              FreeBSD and MacOS now use posix semaphores to implement named semaphores
              and mutex.
            </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_41_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_41_00" title="Boost 1.41 Release">Boost
        1.41 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              Support for POSIX shared memory in Mac OS.
            </li>
<li class="listitem">
              <span class="bold"><strong>ABI breaking</strong></span>: Generic <code class="computeroutput"><span class="identifier">semaphore</span></code> and <code class="computeroutput"><span class="identifier">named_semaphore</span></code>
              now implemented more efficiently with atomic operations.
            </li>
<li class="listitem">
              More robust file opening in Windows platforms with active Anti-virus
              software.
            </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_40_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_40_00" title="Boost 1.40 Release">Boost
        1.40 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              Windows shared memory is created in Shared Documents folder so that
              it can be shared between services and processes
            </li>
<li class="listitem">
              Fixed bugs <a href="https://svn.boost.org/trac/boost/ticket/2967" target="_top">#2967</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/2973" target="_top">#2973</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/2992" target="_top">#2992</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/3138" target="_top">#3138</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/3166" target="_top">#3166</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/3205" target="_top">#3205</a>.
            </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_39_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_39_00" title="Boost 1.39 Release">Boost
        1.39 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              Added experimental <code class="computeroutput"><span class="identifier">stable_vector</span></code>
              container.
            </li>
<li class="listitem">
              <code class="computeroutput"><span class="identifier">shared_memory_object</span><span class="special">::</span><span class="identifier">remove</span></code>
              has now POSIX <code class="computeroutput"><span class="identifier">unlink</span></code>
              semantics and <code class="computeroutput"><span class="identifier">file_mapping</span><span class="special">::</span><span class="identifier">remove</span></code>
              was added to obtain POSIX <code class="computeroutput"><span class="identifier">unlink</span></code>
              semantics with mapped files.
            </li>
<li class="listitem">
              Shared memory in windows has now kernel lifetime instead of filesystem
              lifetime: shared memory will disappear when the system reboots.
            </li>
<li class="listitem">
              Updated move semantics.
            </li>
<li class="listitem">
              Fixed bugs <a href="https://svn.boost.org/trac/boost/ticket/2722" target="_top">#2722</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/2729" target="_top">#2729</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/2766" target="_top">#2766</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/1390" target="_top">#1390</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/2589" target="_top">#2589</a>,
            </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_38_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_38_00" title="Boost 1.38 Release">Boost
        1.38 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              Updated documentation to show rvalue-references funcions instead of
              emulation functions.
            </li>
<li class="listitem">
              More non-copyable classes are now movable.
            </li>
<li class="listitem">
              Move-constructor and assignments now leave moved object in default-constructed
              state instead of just swapping contents.
            </li>
<li class="listitem">
              Several bugfixes ( <a href="https://svn.boost.org/trac/boost/ticket/2391" target="_top">#2391</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/2431" target="_top">#2431</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/1390" target="_top">#1390</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/2570" target="_top">#2570</a>,
              <a href="https://svn.boost.org/trac/boost/ticket/2528" target="_top">#2528</a>.
            </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_37_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_37_00" title="Boost 1.37 Release">Boost
        1.37 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              Containers can be used now in recursive types.
            </li>
<li class="listitem">
              Added <code class="computeroutput"><span class="identifier">BOOST_INTERPROCESS_FORCE_GENERIC_EMULATION</span></code>
              macro option to force the use of generic emulation code for process-shared
              synchronization primitives instead of native POSIX functions.
            </li>
<li class="listitem">
              Added placement insertion members to containers
            </li>
<li class="listitem">
              <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">posix_time</span><span class="special">::</span><span class="identifier">pos_inf</span></code> value is now handled portably
              for timed functions.
            </li>
<li class="listitem">
              Update some function parameters from <code class="computeroutput"><span class="identifier">iterator</span></code>
              to <code class="computeroutput"><span class="identifier">const_iterator</span></code> in
              containers to keep up with the draft of the next standard.
            </li>
<li class="listitem">
              Documentation fixes.
            </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_36_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_36_00" title="Boost 1.36 Release">Boost
        1.36 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              Added anonymous shared memory for UNIX systems.
            </li>
<li class="listitem">
              Fixed erroneous <code class="computeroutput"><span class="keyword">void</span></code> return
              types from <code class="computeroutput"><span class="identifier">flat_map</span><span class="special">::</span><span class="identifier">erase</span><span class="special">()</span></code> functions.
            </li>
<li class="listitem">
              Fixed missing move semantics on managed memory classes.
            </li>
<li class="listitem">
              Added copy_on_write and open_read_only options for shared memory and
              mapped file managed classes.
            </li>
<li class="listitem">
              <span class="bold"><strong>ABI breaking</strong></span>: Added to <code class="computeroutput"><span class="identifier">mapped_region</span></code> the mode used to create
              it.
            </li>
<li class="listitem">
              Corrected instantiation errors in void allocators.
            </li>
<li class="listitem">
              <code class="computeroutput"><span class="identifier">shared_ptr</span></code> is movable
              and supports aliasing.
            </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_35_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_35_00" title="Boost 1.35 Release">Boost
        1.35 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              Added auxiliary utilities to ease the definition and construction of
              <code class="computeroutput"><a class="link" href="../boost/interprocess/shared_ptr.html" title="Class template shared_ptr">shared_ptr</a></code>,
              <code class="computeroutput"><a class="link" href="../boost/interprocess/weak_ptr.html" title="Class template weak_ptr">weak_ptr</a></code>
              and <code class="computeroutput"><a class="link" href="../boost/interprocess/unique_ptr.html" title="Class template unique_ptr">unique_ptr</a></code>.
              Added explanations and examples of these smart pointers in the documentation.
            </li>
<li class="listitem">
              Optimized vector:
              <div class="itemizedlist"><ul class="itemizedlist" type="circle">
<li class="listitem">
                    1) Now works with raw pointers as much as possible when using
                    allocators defining <code class="computeroutput"><span class="identifier">pointer</span></code>
                    as an smart pointer. This increases performance and improves
                    compilation times.
                  </li>
<li class="listitem">
                    2) A bit of metaprogramming to avoid using move_iterator when
                    the type has trivial copy constructor or assignment and improve
                    performance.
                  </li>
<li class="listitem">
                    3) Changed custom algorithms with standard ones to take advantage
                    of optimized standard algorithms.
                  </li>
<li class="listitem">
                    4) Removed unused code.
                  </li>
</ul></div>
            </li>
<li class="listitem">
              <span class="bold"><strong>ABI breaking</strong></span>: Containers don't derive
              from allocators, to avoid problems with allocators that might define
              virtual functions with the same names as container member functions.
              That would convert container functions in virtual functions and might
              disallow some of them if the returned type does not lead to a covariant
              return. Allocators are now stored as base classes of internal structs.
            </li>
<li class="listitem">
              Implemented <code class="computeroutput"><a class="link" href="../boost/interprocess/named_mutex.html" title="Class named_mutex">named_mutex</a></code>
              and <code class="computeroutput"><a class="link" href="../boost/interprocess/named_semaphore.html" title="Class named_semaphore">named_semaphore</a></code>
              with POSIX named semaphores in systems supporting that option. <code class="computeroutput"><a class="link" href="../boost/interprocess/named_condition.html" title="Class named_condition">named_condition</a></code>
              has been accordingly changed to support interoperability with <code class="computeroutput"><a class="link" href="../boost/interprocess/named_mutex.html" title="Class named_mutex">named_mutex</a></code>.
            </li>
<li class="listitem">
              Reduced template bloat for node and adaptive allocators extracting
              node implementation to a class that only depends on the memory algorithm,
              instead of the segment manager + node size + node number...
            </li>
<li class="listitem">
              Fixed bug in <code class="computeroutput"><span class="identifier">mapped_region</span></code>
              in UNIX when mapping address was provided but the region was mapped
              in another address.
            </li>
<li class="listitem">
              Added <code class="computeroutput"><span class="identifier">aligned_allocate</span></code>
              and <code class="computeroutput"><span class="identifier">allocate_many</span></code> functions
              to managed memory segments.
            </li>
<li class="listitem">
              Improved documentation about managed memory segments.
            </li>
<li class="listitem">
              <span class="bold"><strong>Boost.Interprocess</strong></span> containers are
              now documented in the Reference section.
            </li>
<li class="listitem">
              Correction of typos and documentation errors.
            </li>
<li class="listitem">
              Added <code class="computeroutput"><span class="identifier">get_instance_name</span></code>,
              <code class="computeroutput"><span class="identifier">get_instance_length</span></code>
              and <code class="computeroutput"><span class="identifier">get_instance_type</span></code>
              functions to managed memory segments.
            </li>
<li class="listitem">
              Corrected suboptimal buffer expansion bug in <code class="computeroutput"><span class="identifier">rbtree_best_fit</span></code>.
            </li>
<li class="listitem">
              Added iteration of named and unique objects in a segment manager.
            </li>
<li class="listitem">
              Fixed leak in <code class="computeroutput">vector</code>.
            </li>
<li class="listitem">
              Added support for Solaris.
            </li>
<li class="listitem">
              Optimized <code class="computeroutput"><a class="link" href="../boost/interprocess/segment_manager.html" title="Class template segment_manager">segment_manager</a></code>
              to avoid code bloat associated with templated instantiations.
            </li>
<li class="listitem">
              Fixed bug for UNIX: No slash ('/') was being added as the first character
              for shared memory names, leading to errors in some UNIX systems.
            </li>
<li class="listitem">
              Fixed bug in VC-8.0: Broken function inlining in core offset_ptr functions.
            </li>
<li class="listitem">
              Code examples changed to use new BoostBook code import features.
            </li>
<li class="listitem">
              Added aligned memory allocation function to memory algorithms.
            </li>
<li class="listitem">
              Fixed bug in <code class="computeroutput"><span class="identifier">deque</span><span class="special">::</span><span class="identifier">clear</span><span class="special">()</span></code> and <code class="computeroutput"><span class="identifier">deque</span><span class="special">::</span><span class="identifier">erase</span><span class="special">()</span></code>, they were declared private.
            </li>
<li class="listitem">
              Fixed bug in <code class="computeroutput"><span class="identifier">deque</span><span class="special">::</span><span class="identifier">erase</span><span class="special">()</span></code>. Thanks to Steve LoBasso.
            </li>
<li class="listitem">
              Fixed bug in <code class="computeroutput"><span class="identifier">atomic_dec32</span><span class="special">()</span></code>. Thanks to Glenn Schrader.
            </li>
<li class="listitem">
              Improved (multi)map/(multi)set constructors taking iterators. Now those
              have linear time if the iterator range is already sorted.
            </li>
<li class="listitem">
              <span class="bold"><strong>ABI breaking</strong></span>: (multi)map/(multi)set
              now reduce their node size. The color bit is embedded in the parent
              pointer. Now, the size of a node is the size of 3 pointers in most
              systems. This optimization is activated for raw and <code class="computeroutput"><span class="identifier">offset_ptr</span></code>
              pointers.
            </li>
<li class="listitem">
              (multi)map/(multi)set now reuse memory from old nodes in the assignment
              operator.
            </li>
<li class="listitem">
              <span class="bold"><strong>ABI breaking</strong></span>: Implemented node-containers
              based on intrusive containers. This saves code size, since many instantiations
              share the same algorithms.
            </li>
<li class="listitem">
              Corrected code to be compilable with Visual C++ 8.0.
            </li>
<li class="listitem">
              Added function to zero free memory in memory algorithms and the segment
              manager. This function is useful for security reasons and to improve
              compression ratios for files created with <code class="computeroutput"><span class="identifier">managed_mapped_file</span></code>.
            </li>
<li class="listitem">
              Added support for intrusive index types in managed memory segments.
              Intrusive indexes save extra memory allocations to allocate the index
              since with just one allocation, we allocate room for the value, the
              name and the hook to insert the object in the index.
            </li>
<li class="listitem">
              Created new index type: <span class="bold"><strong>iset_index</strong></span>.
              It's an index based on an intrusive set (rb-tree).
            </li>
<li class="listitem">
              Created new index type: <span class="bold"><strong>iunordered_set_index</strong></span>.
              It's an index based on a pseudo-intrusive unordered set (hash table).
            </li>
<li class="listitem">
              <span class="bold"><strong>ABI breaking</strong></span>: The intrusive index
              <span class="bold"><strong>iset_index</strong></span> is now the default index
              type.
            </li>
<li class="listitem">
              Optimized vector to take advantage of <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_trivial_destructor</span></code>.
              This optimization avoids calling destructors of elements that have
              a trivial destructor.
            </li>
<li class="listitem">
              Optimized vector to take advantage of <code class="computeroutput"><span class="identifier">has_trivial_destructor_after_move</span></code>
              trait. This optimization avoids calling destructors of elements that
              have a trivial destructor if the element has been moved (which is the
              case of many movable types). This trick was provided by Howard Hinnant.
            </li>
<li class="listitem">
              Added security check to avoid integer overflow bug in allocators and
              named construction functions.
            </li>
<li class="listitem">
              Added alignment checks to forward and backwards expansion functions.
            </li>
<li class="listitem">
              Fixed bug in atomic functions for PPC.
            </li>
<li class="listitem">
              Fixed race-condition error when creating and opening a managed segment.
            </li>
<li class="listitem">
              Added adaptive pools.
            </li>
<li class="listitem">
              <span class="bold"><strong>Source breaking</strong></span>: Changed node allocators'
              template parameter order to make them easier to use.
            </li>
<li class="listitem">
              Added support for native windows shared memory.
            </li>
<li class="listitem">
              Added more tests.
            </li>
<li class="listitem">
              Corrected the presence of private functions in the reference section.
            </li>
<li class="listitem">
              Added function (<code class="computeroutput"><span class="identifier">deallocate_free_chunks</span><span class="special">()</span></code>) to manually deallocate completely
              free chunks from node allocators.
            </li>
<li class="listitem">
              Implemented N1780 proposal to LWG issue 233: <span class="emphasis"><em>Insertion hints
              in associative containers</em></span> in interprocess <code class="computeroutput">multiset</code>
              and <code class="computeroutput">multimap</code>
              classes.
            </li>
<li class="listitem">
              <span class="bold"><strong>Source breaking</strong></span>: A shared memory object
              is now used including <code class="computeroutput"><span class="identifier">shared_memory_object</span><span class="special">.</span><span class="identifier">hpp</span></code>
              header instead of <code class="computeroutput"><span class="identifier">shared</span>
              <span class="identifier">memory</span><span class="special">.</span><span class="identifier">hpp</span></code>.
            </li>
<li class="listitem">
              <span class="bold"><strong>ABI breaking</strong></span>: Changed global mutex
              when initializing managed shared memory and memory mapped files. This
              change tries to minimize deadlocks.
            </li>
<li class="listitem">
              <span class="bold"><strong>Source breaking</strong></span>: Changed shared memory,
              memory mapped files and mapped region's open mode to a single <code class="computeroutput"><span class="identifier">mode_t</span></code> type.
            </li>
<li class="listitem">
              Added extra WIN32_LEAN_AND_MEAN before including DateTime headers to
              avoid socket redefinition errors when using Interprocess and Asio in
              windows.
            </li>
<li class="listitem">
              <span class="bold"><strong>ABI breaking</strong></span>: <code class="computeroutput"><span class="identifier">mapped_region</span></code>
              constructor no longer requires classes derived from memory_mappable,
              but classes must fulfill the MemoryMappable concept.
            </li>
<li class="listitem">
              Added in-place reallocation capabilities to basic_string.
            </li>
<li class="listitem">
              <span class="bold"><strong>ABI breaking</strong></span>: Reimplemented and optimized
              small string optimization. The narrow string class has zero byte overhead
              with an internal 11 byte buffer in 32 systems!
            </li>
<li class="listitem">
              Added move semantics to containers. Improves performance when using
              containers of containers.
            </li>
<li class="listitem">
              <span class="bold"><strong>ABI breaking</strong></span>: End nodes of node containers
              (list, slist, map/set) are now embedded in the containers instead of
              allocated using the allocator. This allows no-throw move-constructors
              and improves performance.
            </li>
<li class="listitem">
              <span class="bold"><strong>ABI breaking</strong></span>: <span class="bold"><strong>slist</strong></span>
              and <span class="bold"><strong>list</strong></span> containers now have constant-time
              <span class="emphasis"><em>size()</em></span> function. The size of the container is
              added as a member.
            </li>
</ul></div>
</div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="interprocess.acknowledgements_notes.books_and_links"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.books_and_links" title="Books and interesting links">Books
      and interesting links</a>
</h3></div></div></div>
<div class="toc"><dl>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.books_and_links.references_books">Books</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.books_and_links.references_links">Links</a></span></dt>
</dl></div>
<p>
        Some useful references about the C++ programming language, C++ internals,
        shared memory, allocators and containers used to design <span class="bold"><strong>Boost.Interprocess</strong></span>.
      </p>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.books_and_links.references_books"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.books_and_links.references_books" title="Books">Books</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              Great book about multithreading, and POSIX: <span class="bold"><strong><span class="emphasis"><em>"Programming
              with Posix Threads"</em></span></strong></span>, <span class="bold"><strong>David
              R. Butenhof</strong></span>
            </li>
<li class="listitem">
              The UNIX inter-process bible: <span class="bold"><strong><span class="emphasis"><em>"UNIX
              Network Programming, Volume 2: Interprocess Communications"</em></span></strong></span>,
              <span class="bold"><strong>W. Richard Stevens</strong></span>
            </li>
<li class="listitem">
              Current STL allocator issues: <span class="bold"><strong><span class="emphasis"><em>"Effective
              STL"</em></span></strong></span>, <span class="bold"><strong>Scott Meyers</strong></span>
            </li>
<li class="listitem">
              My C++ bible: <span class="bold"><strong><span class="emphasis"><em>"Thinking in C++,
              Volume 1 &amp; 2"</em></span></strong></span>, <span class="bold"><strong>Bruce
              Eckel and Chuck Allison</strong></span>
            </li>
<li class="listitem">
              The book every C++ programmer should read: <span class="bold"><strong><span class="emphasis"><em>"Inside
              the C++ Object Model"</em></span></strong></span>, <span class="bold"><strong>Stanley
              B. Lippman</strong></span>
            </li>
<li class="listitem">
              A must-read: <span class="bold"><strong><span class="emphasis"><em>"ISO/IEC TR 18015:
              Technical Report on C++ Performance"</em></span></strong></span>, <span class="bold"><strong>ISO WG21-SC22 members.</strong></span>
            </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.books_and_links.references_links"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.books_and_links.references_links" title="Links">Links</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              A framework to put the STL in shared memory: <a href="http://allocator.sourceforge.net/" target="_top"><span class="emphasis"><em>"A
              C++ Standard Allocator for the Standard Template Library"</em></span>
              </a>.
            </li>
<li class="listitem">
              Instantiating C++ objects in shared memory: <a href="http://www.cs.ubc.ca/local/reading/proceedings/cascon94/htm/english/abs/hon.htm" target="_top"><span class="emphasis"><em>"Using
              objects in shared memory for C++ application"</em></span> </a>.
            </li>
<li class="listitem">
              A shared memory allocator and relative pointer: <a href="http://home.earthlink.net/~joshwalker1/writing/SharedMemory.html" target="_top"><span class="emphasis"><em>"Taming
              Shared Memory"</em></span> </a>.
            </li>
</ul></div>
</div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="interprocess.acknowledgements_notes.future_improvements"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements" title="Future improvements...">Future
      improvements...</a>
</h3></div></div></div>
<div class="toc"><dl>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements.win32_sync">Win32
        synchronization is too basic</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements.future_objectnames">Use
        of wide character names on Boost.Interprocess basic resources</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements.future_security">Security
        attributes</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements.future_ipc">Future
        inter-process communications</a></span></dt>
</dl></div>
<p>
        There are some Interprocess features that I would like to implement and some
        <span class="bold"><strong>Boost.Interprocess</strong></span> code that can be much
        better. Let's see some ideas:
      </p>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.future_improvements.win32_sync"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements.win32_sync" title="Win32 synchronization is too basic">Win32
        synchronization is too basic</a>
</h4></div></div></div>
<p>
          Win32 version of shared mutexes and shared conditions are based on "spin
          and wait" atomic instructions. This leads to poor performance and
          does not manage any issues like priority inversions. We would need very
          serious help from threading experts on this. And I'm not sure that this
          can be achieved in user-level software. Posix based implementations use
          PTHREAD_PROCESS_SHARED attribute to place mutexes in shared memory, so
          there are no such problems. I'm not aware of any implementation that simulates
          PTHREAD_PROCESS_SHARED attribute for Win32. We should be able to construct
          these primitives in memory mapped files, so that we can get filesystem
          persistence just like with POSIX primitives.
        </p>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.future_improvements.future_objectnames"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements.future_objectnames" title="Use of wide character names on Boost.Interprocess basic resources">Use
        of wide character names on Boost.Interprocess basic resources</a>
</h4></div></div></div>
<p>
          Currently Interprocess only allows <span class="bold"><strong>char</strong></span>
          based names for basic named objects. However, several operating systems
          use <span class="bold"><strong>wchar_t</strong></span> names for resources (mapped
          files, for example). In the future Interprocess should try to present a
          portable narrow/wide char interface. To do this, it would be useful to
          have a boost wstring &lt;-&gt; string conversion utilities to translate
          resource names (escaping needed characters that can conflict with OS names)
          in a portable way. It would be interesting also the use of <span class="bold"><strong>boost::filesystem</strong></span>
          paths to avoid operating system specific issues.
        </p>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.future_improvements.future_security"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements.future_security" title="Security attributes">Security
        attributes</a>
</h4></div></div></div>
<p>
          <span class="bold"><strong>Boost.Interprocess</strong></span> does not define security
          attributes for shared memory and synchronization objects. Standard C++
          also ignores security attributes with files so adding security attributes
          would require some serious work.
        </p>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.future_improvements.future_ipc"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements.future_ipc" title="Future inter-process communications">Future
        inter-process communications</a>
</h4></div></div></div>
<p>
          <span class="bold"><strong>Boost.Interprocess</strong></span> offers a process-shared
          message queue based on <span class="bold"><strong>Boost.Interprocess</strong></span>
          primitives like mutexes and conditions. I would want to develop more mechanisms,
          like stream-oriented named fifo so that we can use it with a iostream-interface
          wrapper (we can imitate Unix pipes).
        </p>
<p>
          C++ needs more complex mechanisms and it would be nice to have a stream
          and datagram oriented PF_UNIX-like mechanism in C++. And for very fast
          inter-process remote calls Solaris doors is an interesting alternative
          to implement for C++. But the work to implement PF_UNIX-like sockets and
          doors would be huge (and it might be difficult in a user-level library).
          Any network expert volunteer?
        </p>
</div>
</div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2005-2012 Ion Gaztanaga<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
</div></td>
</tr></table>
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